Quantum physics

Wow I was looking for some info on quantum physics and stumbled on this *cough* nut job *cough* and check this out *cough*Scam! *cough*

Topic by iman   |  last reply

physical ip protector?

Would it be possible to build a physical hub, for protecting your ip, like some sort of adapter, u first plug in you internet cable to it, then you plug the adapter into your computer?

Question by huyu   |  last reply

A proposed projects for physics...

Hello there techies, the project USB charger was proposed by me to our professor in physics II. unfortunately he didn't accept such project HOWEVER he was happy. He just said that our project is not yet satisfying. He wants us to do a power inverter. We will buy a 2 6-volts battery and series it and it will output a 200+volts with a 30watts and then we will insert any charger such as a nokia cell phone charger and then voila, it should be charging. Do you think it is possible to do? And another project I proposed is that we will make a REAL TIME CLOCK using a 7 segment. I already had a schematic from youtube. and it uses a decade counter ICs but unfortunately I think such ICs are not available in our country, can you help us sir? T____T 

Topic by glennvontot   |  last reply

LED physical durability

Heya, So, I'm thinking of making a flashing rattle, by using LEDs and batteries as the "stones" in the rattle. My thought is that when an LED randomly connects with a battery correctly, it will flash. But, will this destroy the LEDs very quickly? Shaking a light bulb is bad, but I think that LEDS are a bit more durable than that. Don't know HOW durable though. Any other thoughts that would help me?

Topic by AidanG   |  last reply

Is this derivation RIGHT(physics)? Answered

Hi to whoever is reading this.Yesterday me and my friend derived an expression relating mass of a photon and its frequency .Can anyone tell me if its right?Ps I'm only 15 years old so i may not be right . Here is the link for it: the folder name isPMF.docx and anyone can view it https://drive.google.com/file/d/0B391sIgwIxyvZ196MmtMTFJFa1k/edit?usp=sharing also thank you in advance.

Question by Strontium   |  last reply

physical and electrical engineering. what is a good thing to start with?

I am thinking about getting into amateur physical and electrical engineering. is there anything i can build, read, see or explore that would either spark an idea or get me some experience? (robotics, model-making, circuit boards) or even kits that you could suggest, involving that sort of thing. thanks

Question by shiboohi   |  last reply

My Blender physics simulations!

Just for fun, I created a few physics simulations in blender, All of them of a building getting knocked down with various objects(meteor, plane, car, spheres). Here it is Here is my first one, It is older And included is a screenshot of the second simulation! :D Tell me what you think :) Thanks ~ReCreate

Topic by ReCreate   |  last reply

3D Domino Physics Simulation!

Just for fun, I made this little video. And these What do you think?Anyways, I made that using a Physics simulation DLL for Gamemaker.Rendered and everything on my Computer, I got Framerates a bit lower than 1(what do you expect with over 1000 Dominoes?), But the recorded video output is much faster than that.Enjoy!

Topic by ReCreate   |  last reply

Physics equation for air displacement? Answered

I want to make a fan powered go-kart, is there a formula I can use to calculate the minimum amount of air displacement to make it move?

Question by A-Nony-Mus   |  last reply

Survey on Physical Computing and Microcontroller

Dear user, I need YOUR help in order to get some insight into the substance of microcontrollers and physical computing. The basic question that needs to be answered is, what the problems are that occur in the process of physical prototyping, what the reasons for these problems are, and how these problems can be avoided. The results will be used in a bachelor thesis, that deals with this topic, trying to find out how easy - or difficult - it is to enter that particular field. I kindly ask you to follow the following link and to participate at this survey. http://www.kwiksurveys.com?s=NJDNHK_210fb8e2 Thank you very much in advance! Vletsou Ioanna LMU - University of Munich  

Topic by asking-student   |  last reply

Optics question; physics homework... Answered

Hi guys, There is a new physics teacher at school and he asked us this question: an object fell into a very dark hole in the ground and you don't have a flashlight, but the sun is 30 degrees above the horizon. Using a mirror you have to reflect light from the sun into the hole. In one case the hole is one meter deep and in the second case it's three meters deep. The question is: what angle should the mirror be placed in relation to the sun (or horizon) to illuminate the hole? I don't really remember how to calculate this so if you can help me that would be great. Thanks!

Question by Eunix   |  last reply

Physical Representation of Sound by katrusso? Answered

having trouble with the grasshopper script in this instructable same problems as the feedback form akshatm 1. Line 37: Function 'ParseLine' doesn't return a value on all code paths. A null reference exception could occur at run time when the result is used. any suggestions on solving this issue?

Question by NickP9   |  last reply

Water wheel for Physics Class?

I have to make a water wheel that lights up a 6volt bulb and it must have a switch so that when the water is pouring and the light turns on i can turn it of while it spins if i want. I don't know what materials i need or how to use them...HELP! 

Question by aponce4   |  last reply

DIY Palette Gear - Possible

I have been looking at the old Kickstarter campaign for the http://palettegear.com. I have been looking for possibilities to create one myself for much less of the money's :) . I already have many anologue switches and buttons and stuff. The issue is making them talk to premier pro, ext. Could you hack their software to work with your own hardware or something. Another simular company has made this http://xkeys.com/xkeys.php. Ideas?

Topic by Mutant Tortoise 

Physics Illustrator on NON-tablet PC

Well, I've recieved a private message from well over fifty people in the past 30 days requesting that I re-compile and distribute the Physics Illustrator, so I got off my lazy butt this morning and made it. links are updated and working.

Topic by bleachworthy   |  last reply

Physical button to launch a PC application?

So for an upcoming project I need to make a physical button that when pressed launches an application on my PC. I'm going to need to make quite a few of these, each to launch a different app. Ideally it would not be a keystroke from a keyboard, I saw tutorials on dismembering a keyboard and registering a button press to open an app, but I don't want any interferences so I'm looking to avoid that if I can. I'm going for the most cost effective design, not looking to spend much if it can be helped. Any resources or tips would be much appreciated! Thanks guys!

Question by Antilliteracy   |  last reply

Physics question? Why doesn't this work? Answered

So included I have the original "troll physics magnet car" that supposedly would use magnets for propulsion. I know that it doesn't work since the front magnet pulls the car and the car pulls the front magnet, so the energy is evened out. But if you put a stronger magnet on the front, then the smaller magnet on the car wouldn't have enough strength to equalize the larger magnet, so why wouldn't the car move forward?  What if you applied the same idea to a generator? (look at the picture with the circles and rectangles) Wouldn't the bar magnets continue to repel each other and make the generator wheel would spin forever? If the wheel was balanced and was given a little push to get things going, I don't see what the problem would be. I'm not planning on building this machine, so trial and error is out of the question for me.  Please help!

Question by masterbuilder   |  last reply

Physics - Tech engineering software, that is fun?

Hi, Just a quick question... I ran across something called Gmod, or Garry's mod software today by accident. This one here... http://www.youtube.com/watch?v=Ui7S1ToK49Q&feature;=related It looks pretty neat, sort of a mechanical play thing. But, I'm not sure how true to reality the software is, also you apparently need to own a main platform software to use it, like Half Life. I don't have any of the games needed to play around with Gmod. I started to wonder if there is any other software out there that works as an, across the board experimenter's virtual lab? Sort of a mechanical, electronics virtual plaything? I'd think that engineering tech schools would have software such as this, (CAD comes to mind) but I didn't quite find what I was looking for with a google search... Not exactly sure what the best search term would be for something like this? I've come across virtual electronics software, but maybe I'm asking too much for a multi electro-mechanical environment. Has anyone ever used software like this, particularly something fun to play around with, without being to dry? Free would be nice as well, but I'm probably pushing the envelope there a bit! LOL.

Topic by bart245   |  last reply

is there a physics simulator that can simulate air pressure?

I want to experiment on barometers,but it is too risky and i don't have the resources.is there any physics simulator that can simulate fluid,air,air pressure,etc.

Question by utkarshsinghal   |  last reply

A Physics problem I can't explain properly Answered

If a stick with dm/dl =const is hanging on three nonstretchable pieces of string (l1=l2=l3 and l is the distance between them) you can't find the tensions, because the problem is unsolvable if all the strings don't stretch. It is kind of obvious, because if a string happens to be 0,00000000001 mm longer than the others the tension will be zero. But how to prove this normally?  Sorry, I almost never use English for Physics conversation, so I don't know any proper words...

Question by gruffalo child   |  last reply

Looking for a model or patern for a rollercoaster for physics class?

I need a pattern or design for a rollercoaster model for physics class that would have at least one vertical loop. This coaster must run on gravity only, no magnets.

Question by    |  last reply

Few questions about coil physics and capacitors.

Hello.  Hopefully there's some smart electromechanical and physics guys on this board. Long story short I have been working on a coil gun project for about a month now. Originally I was using disposable flash camera circuit, a simple push button, and a coil I took out of a fan. The coil itself is roughly 42 gauge wire, wound an inch long with about 14-18 layers. I achieved best results from this coil, about 4% efficiency, using a 200v 470uf capacitor and a magnetic projectile. However when I used a more powerful capacitor rated at 400v 820uf efficiencies were much lower. I realized the coil was limited and the capacitors energy wasn't being maximized. So I bought some 16 gauge magnet wire to wind a new coil. I wound a coil 40mm long, 3 layers thick around a 1 cm pvc pipe. The coil works but once again there is a huge loss of efficiency at higher energies.  So I need to wind a new coil.  Now here are my questions. 1.  I have read that a coil should be about 33% longer than the projectile.  Is this accurate? 2a.  Is there a magical equation to determine the number of layers a coil should have if all other factors are known? 2b.  How many layers of 16 gauge wire should I use for a coil wrapped around a 1/4 inch barrel to maximize efficiency with a 400v 820uf capacitor?  What about a 200v 1200uf capacitor? 3.  Could someone please demonstrate how to convert farads into amps? My main objective is an optically triggered multi stage coil gun with kinetic energy transfer of above 30 joules. I've moved away from flash camera circuitry and am now using dc to dc converters to charge the capacitors.  I need to find out how to convert farads into amps to figure out what kind of transistors I need for the trigger switch.  Any help is truly appreciated.

Topic by MurdaMastaMike 

Graphical User Interface Library for Physical Computing in Processing

Visit our blog:    http://blog.butterflui.org/?paged=3 The subject of physical computing, especially in the field of robotics, is a fascinating area that has already begun its triumphant in universities, schools and hobby applications and is developing with impressive speed. It is highly interesting that Pyhsical Computing and Robotics, more than any other area, can merge many different areas (engineering, design, psychology, biology and many other areas). Our target groups are mainly users with robotic and physical computing affinity: engineering, programmers, mechatronics engineers, product designers, interaction designers, communication designers, robotics, interface designers, developers, electronic engineers and artists. There are people who want to monitor and control the input and output of their system without major effort in which they rely on an interface library. Robot experiment sets are increasingly being used in short-term projects in schools and universities to provide basic knowledge on physical computing. Our analysis of current sets shows us that existing features don’t cover all aspects of robotics. The aspect that has been neglected so far according to our research, is the controlling and monitoring of experimental physical computing projects through a graphical interface. Visit our blog:    http://blog.butterflui.org/?paged=3

Topic by faydemir 

How to connect a physical pushbutton to a display to trigger an animation.

I'm trying to figure out how I would set up a physical pushbutton so as to trigger an animation once pushed.  The programming language I'm using is processing, and the content would be played on a 32" screen.  So I'm trying to figure out what type of hardware I would need (circuit boards, pushbuttons..etc) in order for this to work.  Thank you in advance to anyone that offers some advice.  P.S. I also have little knowledge in programming this is a project so I can become more familiar with it. Thanks!! 

Topic by SarahinaB   |  last reply

physics mini potato spud gun homework help

Im a grade 11 n i need to write an essay about mini spud gun, but i dun reli understand the physics theory behind it? i search it thr the internet n is now more confused? which one(s) of these is it involved with?>> Projectile Motion Newton's 1st Law of Motion: Inertia Newtons 2nd Law of Force and Acceleration Newton's 3rd Law of Motioin: Action and Reaction Momentum Energy he Boyle Law or the Kinetic Theory of Gases?? why? thanks so much! im not askin like for ppl to do my hw, i juz wanted to know which one of those is a potato gun involved wif.thanks!

Topic by babyduck   |  last reply

How could I convert a physical book into an ebook?

I have some books that I would like to make into ebooks so that i can carry them around and read them more conveniently. I would prefer not to use a scanner, partly because mine is not very good and also because a few of my books are somewhat fragile and I do not want to damage the spines on them. I do have a very nice digital SLR camera if there is something I could do with that. thanks for the help

Question by AnOverdoseofZac   |  last reply

Trying to cut bike frames ( for physically impaired person ) ?

Hello once again, I've sorta been sneaking around trying to decide what the best way to go about trying to cut ( basically a bike frame ) without doing it manaually and = or spending too much cash I dont have. Welders look like they'd require a high skill level to hold and I cant really hold- or in fact even BE near things- that causes high or noticable rpm , so the hacksaw doesnt seem too great an idea either . But what i was thinking ,was that I could use some of sort of clamp set up so that I didnt have to hold the hacksaw while cutting the frame ( its really a knee walker frame ) If this seems like a good idea or  any one has any other suggestions or ideas that might allow me to do this  , i really appreciate your opnion on the best way I should go. thanks hele

Topic by hele   |  last reply

I am doing a "plans" project in pre-ap high school physics and i need ideas!

This project is where I have to have someone else's plans for a project and I have to give a lesson over how physics works in the thing I make. I could make a building or bridge or radio and anything basically as long as its not outrageously simple and has physics behind it. however I would need to spend under $15 otherwise I have to submit what I am buying and how much each things costs ahead of time. if you have any great ideas and maybe could help with the physics behind it that would be grand! thank you!

Question by hefner93   |  last reply

Is thr any difference between a degree in astrophysics and a degree in physics ?

If yes then i would like to know which 1 of these would provide me with a better job opportunity.Also i want to know what kind of jobs will i be offered ? And will they help me to become a scientist in future ? If no thn what study should i master in order to accomplish my aim ?

Question by Gopal Dey 

Do you know any great physics/chemistry projects? Answered

To a upper-high school academic level. I've been just doing a homopolar motor and supercooling water. Nothing very advanced or interesting. Do you guys know any good projects? Pertaining to Chemistry, I've seen most on Instructables and few on kentchem. Pertaining to Physics, blast away! I've done limited projects although I have few bookmarked for later. Answers that can be made at home are appreciated! Additionally, answers that can be made at quickly with a somewhat limited number of materials are also appreciated. Well since answering stopped Top answers were from FoolishSage, The Skinnerz, and gruffalo child. FoolishSage wins because of the amount of projects provided. But these were all great answers.

Question by Sh3lsh   |  last reply

How does 'fire cupping' work, and what's the Physics behind it? Answered

This is another unethically homework-based question.  I have to estimate the pressure inside the cup, but I don't get how low pressure is formed.  I am not sure that you can heat the air inside so much that the thing will suck in your skin immediately without giving you bad burns. Anyway, they put a match in it for a really short time... Any ideas? The topic is Gas Laws, if it can help anyone.

Question by gruffalo child   |  last reply

Does anyone know any good books on Electronics or Physics? Answered

I don't want any Teach-Yourself-Electronics-In-Five-Easy-Lessons sort of thing, I'd like something practical, but good theoretical Physics and Electronics ones will do too. I've got the Feynman lectures (the best textbook ever) and Horovitz and Hill (I find it a bit too complex and filled with electrical engineering details that are old and not very necessary for me). I'd like a book to learn something (not a new idea) new for me and maybe find a few project ideas. i'm making a sort of a wish list.  Any ideas?

Question by gruffalo child   |  last reply

How to connect physical pushbuttons to a computer for use in a soundboard program?

I plan to do a project that will use 28 arcade style pushbuttons to activate 28 different sounds on a computer. Any ideas on products out there I can use to connect all 28 buttons to a computer, preferably with a USB cable, so it can be used in a programming language such as C++? One idea I had was to take apart a QWERTY keyboard, but I still want to be able to use my regular keyboard to use my computer. Alternatively, is there a way for two keyboards to be connected to same computer, but one of them only activates a specific program? i.e. trying to type in notepad with it wouldn't work?

Topic by Swordmasterb   |  last reply

High school senior project: something I can construct and donate to the physics department any suggestions?

I want to build a demonstration unit that would be useful for the physics teachers.  It has to be fairly challenging to construct, but not impossible or particularly costly.

Question by danielsb7676   |  last reply

how to make a swinging sticks kinetic structure?

I have to make a physics project and i need it to be ready by the end of the year.i loved this structure in the iron man 2 movie,and want to surprise my friends and my teacher at school.help pleease!!!

Question by itsupermeyank   |  last reply

intercepting text messages?

How do you do this without physical control of the target phone

Question by timwwood   |  last reply

I'm a physics teacher and have an old bike in my possession. What are some neat toys I can make?

I am in need of some demonstrations which can be made from old bike parts. Or, neat things to enhance my classroom would work as well (gear clocks which rotate, etc).

Question by    |  last reply

What is the strength of the other charge?

I need help with solving this problem in physics class. I know Coulombs equation F= k(q1q2)/r^2 The force between two charges is 2 newtons. The distance between the charges is 2 x 10 ^ -4 meters. If one of the charges is 3 x 10 ^ -6 C, What is the strength of the other charge?

Question by Baseball24_7   |  last reply

how to get physical memory used when running a program using sigar?

Im newbie in sigar. and i tried run the example provided. its really great to have knowing our cpu, the time taken and everything. but does this sigar also can calculate the memory used in our cpu when running a program? please and thank you.

Question by saraBrown   |  last reply

Is there a way to estimate how long an antenna is?

If I built a radio transmitter and then attached it to an antenna of unknown length, is there a way to calculate the length of it using transmissions? Or, as a separate question, if I had an antenna of known length and then increased or decreased the length, would there be a way to estimate the new length from transmission properties (basically without physically measuring the antenna? Assume the antenna is a straight line.

Question by kakashibatosi   |  last reply

How to measure light wavelenght? Answered

Please, don't say 'with a waveleghtometer' . This is a Physics 'practical problem', and I'm thinking interference.

Question by gruffalo child   |  last reply

Is it possible to extract the chip (and its physical environment) of a moblie and insert it into Arduino Technology?

I got no soldering/electronic skills, but would like to enhance clothes with Arduinos as next project. Arduino runs with 8/16Mhz and i thought, if the mobiles do have that tiny but fast chips, maybe theres a possibility to implant them on Arduino-Boards, but i dunno, if thats possible and howto.

Question by Luziviech   |  last reply

Group : Collection of Instructables for class-room and teaching purposes ...

Hi !I created a group that seems not to have been ever created here yet."Class-Room" group.The main purpose of this group is to make a collection of every instructables that may be useful for school teaching, and that may be reproduced by pupils or students as science-fair or class-room projects ...Please, add your Instructables if they fit this description._Biology :"Be a Scientist : map your skin"Chemistry :"Carbonating""Kitchen laboratory II : The CO2 trap""Make crystal clear ice !""Make Rheopectic slime in less than 15 minutes !""Shelling a raw egg !""Sodium Acetate"Investigations :"Amazing Kite For Under $5""How to make Playdough (Play-doh)""Oobleck""Pop-Up 3D words and messages !""The Huffin' Hoopster""The Improved CD Hovercraft."Physics : Electricity & Electrostatics :"Build an Electrostatics Motor""Jacob's Ladder Sculpture from found materials""Kelvin's Thunderstorm : Create lightning from water""Paper Resistor"Physics : Instruments & Measures :"Be a Scientist : Make your own force-meter.""Be a Scientist : Make your own thermometer"Physics : Magnetism :"A simple mechanical resonance demonstrator""Diamagnetic Levitation Experiment"Physics : Optics :"Naff Movie into _DVD-Spectra_""Optical Water-Prism"Physics : Sound :"How to measure the speed of sound ...""Mechanica Wave Driver for Chladni Plate"

Topic by chooseausername   |  last reply